Patents by Inventor Sung Hak Jo

Sung Hak Jo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10150912
    Abstract: There is provided a red phosphor that may include a nitride represented by a formula of (Sr1-x-yBaxEuy)2Si5N8, wherein 0<x<0.7, and 0<y<0.1. The red phosphor may emit light having a peak wavelength in a range of 600 nm to 630 nm when irradiated by an excitation source and the excitation source may be a blue light source having a dominant wavelength in a range of 420 nm to 470 nm.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: December 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Woo Choi, Sung Hak Jo, Sun Yeol Choi, Jung Eun Yoon, Chul Soo Yoon, Tae Young Choi
  • Patent number: 9728152
    Abstract: A shift register for reducing size of a display apparatus through a reduction in falling edge time of a scan pulse. The shift register includes stages for sequentially outputting carry pulses and scan pulses. Each stage includes a carry output unit for generating a carry pulse, based on a first discharge voltage and a clock pulse having a low-level voltage with a level substantially equal to the first discharge voltage, and supplying the carry pulse to at least one of an upstream stage and a downstream stage, a scan output unit for generating a scan pulse, based on a second discharge voltage having a higher voltage value than the first discharge voltage and the clock pulse, and supplying the scan pulse to a corresponding gate line, and a node controller for controlling voltages at nodes connected to the carry output unit and the scan output unit.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 8, 2017
    Assignee: LG Display Co., Ltd.
    Inventor: Sung-Hak Jo
  • Publication number: 20160177178
    Abstract: There is provided a red phosphor that may include a nitride represented by a formula of (Sr1?x?yBaxEuy)2Si5N8, wherein 0<x<0.7, and 0<y<0.1. The red phosphor may emit light having a peak wavelength in a range of 600 nm to 630 nm when irradiated by an excitation source and the excitation source may be a blue light source having a dominant wavelength in a range of 420 nm to 470 nm.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 23, 2016
    Inventors: Sung Woo CHOI, Sung Hak JO, Sun Yeol CHOI, Jung Eun YOON, Chul Soo YOON, Tae Young CHOI
  • Patent number: 9062253
    Abstract: There are provided a phosphor and a light emitting device. The phosphor includes a phosphor composition including a rare-earth element employed in a compound represented by the equation: L3Si6N11, wherein L is one or more elements selected from La, Y, Gd and Lu, the rare-earth element is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm and Yb. The phosphor composition is provided in particle form. The particle has at least a portion of a plane perpendicular to a [001] direction to be flat thereon so as to have a crystal plane.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: June 23, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyong Sik Won, Youn Gon Park, Seong Min Kim, Chan Suk Min, Sung Hak Jo, Chul Soo Yoon
  • Patent number: 9034207
    Abstract: A phosphor is represented by a general Formula: EuxMyL3?x?ySi6?zAlzN11?(z+y+z)O(z+y+z) and satisfies 0.00001?x?2.9999, 0.0001?y?2.99999 and 0?z?6.0. L is at least one element selected from La, Y, Gd and Lu. M is at least one element selected from Ca, Sr, Ba and Mn.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyong Sik Won, Chan Suk Min, Seong Min Kim, Sung Hak Jo, Youn Gon Park, Chul Soo Yoon
  • Publication number: 20150002504
    Abstract: A shift register for reducing size of a display apparatus through a reduction in falling edge time of a scan pulse. The shift register includes stages for sequentially outputting carry pulses and scan pulses. Each stage includes a carry output unit for generating a carry pulse, based on a first discharge voltage and a clock pulse having a low-level voltage with a level substantially equal to the first discharge voltage, and supplying the carry pulse to at least one of an upstream stage and a downstream stage, a scan output unit for generating a scan pulse, based on a second discharge voltage having a higher voltage value than the first discharge voltage and the clock pulse, and supplying the scan pulse to a corresponding gate line, and a node controller for controlling voltages at nodes connected to the carry output unit and the scan output unit.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventor: Sung-Hak Jo
  • Patent number: 8487857
    Abstract: A liquid crystal display (LCD) device includes a data drive circuit that inverts polarities of data every 2k horizontal periods (k is an integer not less than 2); and an LCD panel including a plurality of data lines and a plurality of gate lines crossing each other to define a plurality of pixels, each pixel including a switching device, wherein source electrodes of the switching devices in the pixels arranged in a vertical direction are connected to two different data lines.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: July 16, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Binn Kim, Nam Wook Cho, Sung Hak Jo
  • Patent number: 8289252
    Abstract: A liquid crystal display device includes a data analysis unit to analyze image data of an input image data stream for variation of luminance between the image data, a black data processing unit to insert black data into the input image data stream based on the variation of luminance analyzed by the data analysis unit and to output an output image data stream, and a liquid crystal panel to display images based on the output image data stream output from the black data processing unit.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: October 16, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Nam-Wook Jo, Sung-Hak Jo, Dong-Woo Kim
  • Patent number: 8289311
    Abstract: The display device may include a data aligning part that analyzes a gray level of input data and inserts black data into frame data having less than a designated reference gray level; and a driver that displays the data from the data aligning part in a display panel.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: October 16, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Sung Hak Jo
  • Patent number: 8284373
    Abstract: A liquid crystal display (LCD) device includes a first substrate having a plurality of column spacers fixed thereto, a second substrate facing the first substrate, and having a plurality of projections at portions corresponding to the column spacers, the projections contacting the column spacers, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: October 9, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Ho Oh, Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Mon Soo Kang
  • Patent number: 8169395
    Abstract: An apparatus and method of driving an LCD device is disclosed, which has a simplified structure by decreasing the number of signal transmission lines included in a shift register, the apparatus comprising a display panel to display images; a gate driver to drive gate lines of the display panel; a timing controller to control the gate driver by generating at least three clock pulses having the different phases from one another; and a start pulse generator to generate a start pulse using at least two clock pulses among at least three clock pulses, and to supply the generated start pulse to the gate driver.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: May 1, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Hak Jo, Binn Kim, Nam Wook Cho
  • Patent number: 8054321
    Abstract: A display device includes a data modulator for analyzing a gray level of input data, modulating the input data in accordance with the analyzation result, and inserting one of black data and white data along with the modulated data, and a driver for supplying modulation data from the data modulator and the one of black data and white data to a display panel.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: November 8, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Nam Wook Cho, Sung Hak Jo, Dong Woo Kim
  • Patent number: 7852449
    Abstract: A liquid crystal display (LCD) device includes first and second substrates facing each other, a plurality of column spacers on at least one of the first and second substrates, each column spacer including first pattern second patterns, the first and second patterns being connected to each other, the second pattern having a contact surface less than the first pattern, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: December 14, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Sang Don Yang
  • Patent number: 7834836
    Abstract: A flat panel display device includes a display panel, a memory storing a compensation value that corresponds to a panel defect location, the panel defect location being where any one of a brightness and a color difference exists compared to other part of the display panel, a compensating unit to adjust image data to be displayed in the panel defect location using the compensation value, and a driver to apply the adjusted image data from the compensating unit to the display panel.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 16, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: In Jae Chung, Chul Sang Jang, Sung Hak Jo, Deuk Su Lee, Jong Hoon Kim, Jong Hee Hwang
  • Publication number: 20090316105
    Abstract: A liquid crystal display (LCD) device includes a first substrate having a plurality of column spacers fixed thereto, a second substrate facing the first substrate, and having a plurality of projections at portions corresponding to the column spacers, the projections contacting the column spacers, and a liquid crystal layer between the first and second substrates.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 24, 2009
    Inventors: Chang Ho Oh, Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Mon Soo Kang
  • Publication number: 20090262293
    Abstract: A liquid crystal display (LCD) device includes first and second substrates facing each other, a plurality of column spacers on at least one of the first and second substrates, each column spacer including first pattern second patterns, the first and second patterns being connected to each other, the second pattern having a contact surface less than the first pattern, and a liquid crystal layer between the first and second substrates.
    Type: Application
    Filed: June 9, 2009
    Publication date: October 22, 2009
    Inventors: Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Sang Don Yang
  • Patent number: 7602460
    Abstract: An LCD device and a method for fabricating the same is disclosed, to decrease step coverage in color filter layers of LCD devices having different models formed on one mother substrate, which includes first and second substrates facing each other, in which a plurality of pixel regions are defined; a first black matrix layer on the second substrate except the pixel regions, so as to prevent light leakage; a second black matrix layer on the center of each pixel region of the second substrate, so as to decrease step coverage of color filter layer; the color filter layer in each pixel region; and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: October 13, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Kee Seok Choi, Sung Hak Jo
  • Patent number: 7576826
    Abstract: A liquid crystal display (LCD) device includes first and second substrates facing each other, a plurality of column spacers on at least one of the first and second substrates, each column spacer including first pattern second patterns, the first and second patterns being connected to each other, the second pattern having a contact surface less than the first pattern, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: August 18, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Sang Don Yang
  • Patent number: 7561245
    Abstract: A liquid crystal display (LCD) device includes a first substrate having a plurality of column spacers fixed thereto, a second substrate facing the first substrate, and having a plurality of projections at portions corresponding to the column spacers, the projections contacting the column spacers, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: July 14, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Ho Oh, Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Mon Soo Kang
  • Patent number: 7502090
    Abstract: A liquid crystal display (LCD) device includes a first substrate having a plurality of column spacers fixed thereto, a second substrate facing the first substrate, and having a plurality of projections at portions corresponding to the column spacers, the projections contacting the column spacers, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: March 10, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Ho Oh, Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Mon Soo Kang